<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Lesson 1</title>
</head>
<body style="padding: 50px; text-align: center">
<h2>人生第一个JAVA项目</h2>
<a href="hello">hello world</a>
</body>
</html>